New energy automobile braking system practical training platform

Abstract

The invention discloses a new energy automobile brake system practical training platform, which comprises a display platform and a front suspension fixed at the front end of the display platform, two ends of the front suspension are rotatably connected with a group of wheel discs, tires are fixed on the group of wheel discs respectively, a driving mechanism is arranged on the display platform, and the driving mechanism comprises a group of grooves, a group of driving platforms and two groups of driving rollers. The grooves are formed in the two sides of the front end of the display stand, the front ends of the wheel discs are connected with a braking system, a laser radar sensor is installed on the display stand, and an obstacle simulation mechanism is arranged at the rear end of the display stand. The device has the beneficial effects that the driving mechanism is arranged on the display stand, two groups of driving rollers are adopted to drive a group of tires to rotate, the measuring device is used for measuring a braking value, the ABS anti-lock function of an energy automobile can be simulated in cooperation with a braking system, and the laser radar sensor can simulate the AEB active braking function in cooperation with the obstacle simulation mechanism. The teaching quality and efficiency are effectively improved, and the teaching function requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile teaching aids, in particular to a new energy automobile braking system training platform. Background Art

[0002] Traditional fuel-powered vehicles primarily rely on a vacuum booster pump, which uses the engine running to draw air from a vacuum drum to generate negative pressure, assisting the braking piston. However, when the engine is not running, the vacuum reserve is limited, and the auxiliary braking force will weaken or even disappear. New energy vehicles lack an engine and instead use an electronic power assist system instead of a vacuum booster pump. When the driver depresses the brake pedal, a travel sensor transmits information about the pedal depth to a computer, which then controls the motor torque based on the desired braking force.

[0003] The existing patent application number is CN202321970285.2, which discloses a brake system training bench. The service brake system acts on the wheel disc to hinder the rotation of the wheel disc, causing it to slow down or even stop, simulating the wheel braking process and intuitively showing the structure and working process of the service brake system.

[0004] However, during the operation, students are required to manually cooperate to turn the wheel, and the ABS anti-lock braking function and AEB active braking function currently used in new energy vehicles cannot be intuitively displayed, which affects the teaching quality and efficiency and cannot meet the teaching function requirements. Summary of the Invention

[0005] In view of the above defects, the present invention provides a new energy vehicle braking system training platform to solve the simulation teaching problem of new energy vehicle braking system.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A new energy vehicle braking system training platform includes a display platform and a front suspension fixed to the front end of the display platform, wherein both ends of the front suspension are rotatably connected to a set of wheel discs, and tires are respectively fixed to the wheel discs. The display platform is provided with a driving mechanism; The driving mechanism includes a set of grooves, a set of driving platforms, and two sets of driving rollers. A set of grooves is opened on both sides of the front end of the display platform. A set of driving platforms is installed in the set of grooves. The two sets of driving rollers are movably installed on the top of the set of driving platforms and are used to drive a set of tires to rotate. A driving device for driving the driving rollers to rotate and a measuring device for measuring the braking value are respectively installed on the bottom of the set of driving platforms. A braking system is connected to the front end of a set of wheel discs, and the braking system is used to brake the set of wheel discs; A laser radar sensor is installed on the display stand, and an obstacle simulation mechanism is provided on the rear end of the display stand for simulating active braking.

[0007] Furthermore, the braking system includes a pedal, a vacuum booster, a brake master cylinder, an ABS controller, a set of brake slave cylinders and a set of drum brakes. The pedal is installed at the front end of the display stand; The vacuum booster is arranged between the pedal brake push rod and the brake master cylinder, and the vacuum booster is connected to an electric vacuum motor; The brake master cylinder is connected to the pedal brake push rod through transmission, and hydraulic oil is provided in the brake master cylinder; The ABS controller is connected to the brake master cylinder through the brake pipe and is used to adjust the brake pressure to prevent the wheel from locking; A set of brake slave cylinders are connected to the brake master cylinder through hydraulic pipes and are used to transmit the hydraulic pressure of the brake master cylinder to a set of drum brakes; A set of pressure gauges are respectively connected to the outside of a set of brake cylinders, and a set of pressure gauges is used to display the hydraulic pressure changes of the brake cylinders.

[0008] Furthermore, a temperature sensor is installed on the inner wall of one side of the low-voltage switch cabinet, and the temperature sensor is used to detect the temperature signal inside the low-voltage switch cabinet.

[0009] Furthermore, a group of wheel discs are respectively installed with wheel speed sensors. When the wheel speed sensors detect that a group of wheel discs are locked, the ABS controller starts and opens the normally closed output solenoid valve, causing the brake pressure on the wheel disc to drop rapidly due to the presence of a pipeline directly connected to the brake fluid storage tank, thereby simulating wheel anti-lock.

[0010] Furthermore, the obstacle simulation mechanism includes a stepper motor 1, a rotating screw rod 1, a sliding nut 1, a sliding plate, a stepper motor 2, a rotating round rod, a sliding shaft sleeve, a groove, a rotating screw rod 2, a sliding nut 2 and a bearing seat. The stepper motor 1 is installed on the right side of the rear end of the display stand, the rotating screw rod 1 is installed on the rotating end of the stepper motor 1, the sliding nut 1 is threadedly sleeved on the rotating screw rod 1, the sliding plate is installed on the upper end of the sliding nut 1, the stepper motor 2 is installed on the left side of the rear end of the display stand, the rotating round rod is installed on the rotating end of the stepper motor 2, and the sliding shaft sleeve is movably inserted at the left end of the sliding plate, and is movable The movable sleeve is mounted on the rotating round rod, the groove is opened on the sliding plate, the rotating screw rod 2 is movably installed in the groove, the sliding nut 2 is threadedly mounted on the rotating screw rod 2, the supporting seat is slidably installed in the groove, and is mounted on the outside of the sliding nut 2. The obstacle is used to be fixed on the supporting seat. When the system detects that the rate of risk exceeds a certain warning threshold, it will determine that action needs to be taken. First, the driver is prompted through display feedback such as sound or vibration to inform him of the risk of collision. If necessary, the system directly activates the master brake cylinder and outputs the maximum braking force to avoid or reduce the consequences of collision as much as possible to simulate active braking.

[0011] Furthermore, the sliding sleeve is connected to the rotating screw rod 2 through a set of helical gears, and a spline is provided on the rotating rod to facilitate the movement of the sliding sleeve.

[0012] Furthermore, a lifting platform is installed at the bottom of each group of grooves, and the driving platform is fixed on the lifting platform. The lifting platform is a hand-cranked lifting platform, which is convenient for replacing tires or other accessories.

[0013] Furthermore, the driving device includes a driving motor and a reducer installed at the bottom of the driving platform, and the driving motor is connected to a relative set of driving rollers through a transmission chain, so that a set of driving rollers can drive the wheels to rotate.

[0014] Furthermore, the measuring device includes a force measuring lever and a force measuring sensor installed on the right side of the bottom of the driving platform. One end of the force measuring lever is connected to the reducer housing, and the other end is connected to the force measuring sensor. The force measuring sensor converts the rotational force of the force measuring lever into an electrical signal of the braking force and sends it to the controller.

[0015] Furthermore, a central controller is installed on the display stand, and the central controller is used to control various sensors and components.

[0016] The present invention provides a new energy vehicle braking system training platform, which has the following beneficial effects: a driving mechanism is provided on the display platform, which uses two sets of driving rollers to drive a set of tires to rotate; a measuring device is used to measure the braking value; and the braking system can simulate the ABS anti-lock braking function of energy vehicles; the laser radar sensor can simulate the AEB active braking function in conjunction with the obstacle simulation mechanism, thereby effectively improving the teaching quality and efficiency and meeting the teaching function requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a new energy vehicle braking system training platform described in the present invention.

[0018] Figure 2 This is a top view of the front suspension of the present invention.

[0019] Figure 3 Schematic diagram of the braking system of the present invention.

[0020] Figure 4 This is a top view of a set of driving platforms of the present invention.

[0021] Figure 5 Schematic diagram of the lifting platform of the present invention.

[0022] Figure 6 This is a cross-sectional view of the drive platform of the present invention.

[0023] Figure 7 Schematic diagram of the laser radar sensor described in the present invention.

[0024] Figure 8 Schematic diagram of the obstacle simulation mechanism of the present invention.

[0025] Figure 9 Schematic diagram of the supporting seat of the present invention.

[0026] Figure 10 Schematic diagram of the central controller of the present invention.

[0027] In the figure: 1. Display stand; 2. Front suspension; 3. Wheel disc; 4. Tire; 5. Groove; 6. Drive platform; 7. Drive roller; 8. LiDAR sensor; 9. Pedal; 10. Vacuum booster; 11. Master brake cylinder; 12. ABS controller; 13. Brake slave cylinder; 14. Drum brake; 15. Electric vacuum motor; 16. Brake line; 17. Hydraulic pipe; 18. Pressure gauge; 19. Wheel speed sensor; 20. Stepper motor 1; 21. Rotating screw 1; 22. Sliding nut 1; 23. Sliding plate; 24. Stepper motor 2; 25. Rotating rod; 26. Sliding bushing; 27. Groove; 28. Rotating screw 2; 29. Sliding nut 2; 30. Support base; 31. Bevel gear; 32. Lifting platform; 33. Drive motor; 34. Reducer; 35. Transmission chain; 36. Force measuring lever; 37. Force measuring sensor; 38. Central controller. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-10 As shown: The embodiment of the present application provides a new energy vehicle braking system training platform, including a display platform 1 and a front suspension 2 fixed on the front end of the display platform 1, a group of wheel discs 3 are rotatably connected at both ends of the front suspension 2, and tires 4 are respectively fixed on a group of wheel discs 3, and a driving mechanism is provided on the display platform 1; the driving mechanism includes a group of grooves 5, a group of driving platforms 6 and two groups of driving rollers 7, a group of grooves 5 are opened on both sides of the front end of the display platform 1, a group of driving platforms 6 are installed in a group of grooves 5, and the two groups of driving rollers 7 are movably installed on the top of a group of driving platforms 6 through fastening bearings, and are used to drive a group of tires 4 to rotate, and a driving device for driving the driving rollers 7 to rotate and a measuring device for measuring the braking value are respectively installed on the bottom of a group of driving platforms 6; the front end of a group of wheel discs 3 is connected to a braking system, and the braking system is used to brake a group of wheel discs 3; a laser radar sensor 8 is installed on the display platform 1, and an obstacle simulation mechanism is provided at the rear end of the display platform 1 to simulate active braking.

[0029] In this embodiment, the driving rollers 7 are made of porous high-hardness gravel and have a good adhesion coefficient. A driving mechanism is provided on the display platform 1, and two sets of driving rollers 7 are used to drive a set of tires 4 to rotate, which is convenient for simulating the braking of new energy vehicles. The measuring device is used to measure the braking value. In conjunction with the braking system, it can simulate the ABS anti-lock function of energy vehicles. The laser radar sensor 8 can simulate the AEB active braking function in conjunction with the obstacle simulation mechanism, effectively improving the teaching quality and efficiency and meeting the teaching function requirements.

[0030] In some embodiments, the braking system includes a pedal 9, a vacuum booster 10, a master brake cylinder 11, an ABS controller 12, a set of brake cylinders 13, and a set of drum brakes 14. The pedal 9 is installed on the front end of the display stand 1; The vacuum booster 10 is provided between the brake push rod of the pedal 9 and the brake master cylinder 11, and the vacuum booster 10 is connected to an electric vacuum motor 15; The brake master cylinder 11 is connected to the brake push rod of the pedal 9 through transmission, and hydraulic oil is provided in the brake master cylinder 11; The ABS controller 12 is connected to the brake master cylinder 11 via the brake pipe 16 and is used to adjust the brake pressure to prevent the wheel disc 3 from locking; A group of brake cylinders 13 are connected to the brake master cylinder 11 through hydraulic pipes 17 respectively, and are used to transmit the hydraulic pressure of the brake master cylinder 11 to a group of drum brakes 14.

[0031] A group of pressure gauges 18 are respectively connected to the outside of a group of brake cylinders 13 , and the group of pressure gauges 18 is used to display the hydraulic pressure changes of the brake cylinders 13 .

[0032] Combined collection Figure 2 and attached Figure 3 As shown, when the brake pedal 9 is depressed, the force of the pedal 9 is amplified by the vacuum booster 10, pushing the master brake cylinder 11 to work and generating hydraulic pressure. The brake fluid is distributed through the ABS controller 12 for braking force, and then the energy is transferred to a group of brake cylinders 13 through the hydraulic pipe 17. Finally, a group of brake cylinders 13 drives a group of drum brakes 14 to brake a group of wheel discs 3, thereby achieving braking. The two groups of drive rollers 7 stop working at the same time. The electric vacuum motor 15 is used to supply vacuum to the vacuum booster 10, and a group of pressure gauges 18 is used to display the hydraulic changes of the brake cylinders 13.

[0033] In some embodiments, a group of wheel discs 3 are respectively installed with wheel speed sensors 19 for measuring the rotational speed of the wheels 4 and transmitting the motion state of the wheels 4 in the form of sinusoidal electronic pulse AC signals. The pulses are then processed by a modulator to convert them into digital signals and transmitted to the electronic control unit. When the wheel speed sensors 19 detect that a group of wheel discs 3 are locked, the ABS controller 12 is started and the normally closed output solenoid valve is opened, causing the brake pressure on the wheel discs 3 to drop rapidly due to the presence of a pipeline directly connected to the brake fluid storage tank, thereby simulating wheel anti-lock braking.

[0034] In some embodiments, the obstacle simulation mechanism includes a stepper motor 20, a rotating screw rod 21, a sliding nut 22, a sliding plate 23, a stepper motor 24, a rotating round rod 25, a sliding sleeve 26, a groove 27, a rotating screw rod 28, a sliding nut 29 and a supporting seat 30. The stepper motor 20 is installed on the right side of the rear end of the display stand 1, the rotating screw rod 21 is installed on the rotating end of the stepper motor 20, the sliding nut 22 is threadedly mounted on the rotating screw rod 21, the sliding plate 23 is installed on the upper end of the sliding nut 22, and the stepper motor 20 is installed on the right side of the rear end of the display stand 1. Motor 24 is installed on the left side of the rear end of the display stand 1, the rotating round rod 25 is installed on the rotating end of the stepper motor 24, the sliding sleeve 26 is movably inserted into the left end of the sliding plate 23 through a fastening bearing, and is movably sleeved on the rotating round rod 25, the groove 27 is opened on the sliding plate 23, the rotating screw rod 28 is movably installed in the groove 27 through a fastening bearing, the sliding nut 29 is threadedly sleeved on the rotating screw rod 28, the bearing seat 30 is slidably installed in the groove 27, and is sleeved on the outside of the sliding nut 29, and the obstacle is used to be fixed on the bearing seat 30.

[0035] Combined collection Figure 8 —Attachment Figure 10 As shown, the stepper motor 1 20 can drive the obstacle to move forward and backward through the support base 30, and the stepper motor 2 24 can drive the obstacle to move left and right through the support base 30. When the driving roller 7 drives the wheel 4 to reach a certain rotation speed, the laser radar sensor 8 is used to measure the distance and relative speed to the target in front to evaluate whether the conditions for triggering AEB active braking are met. When the rotation speed of the wheel 4 is low or the obstacle is within a safe range, the AEB active braking is not triggered. When the system detects that the rate of risk exceeds a certain warning threshold, it will determine that action needs to be taken. First, the driver is prompted through display feedback such as sound or vibration to inform him of the risk of collision. When necessary, the system directly activates the master brake cylinder 11 to output the maximum braking force to avoid or mitigate the consequences of the collision as much as possible to simulate active braking.

[0036] In some embodiments, the sliding sleeve 26 and the rotating screw rod 28 are connected through a set of bevel gears 31, and a spline is provided on the rotating rod 25 to facilitate the movement of the sliding sleeve 26.

[0037] In some embodiments, a group of grooves 5 are respectively provided with a lifting platform 32 at the bottom thereof, and the driving platform 6 is fixed on the lifting platform 32. Figure 5 As shown, the lifting platform 32 is a hand-cranked lifting platform, which is convenient for replacing the tire 4 or other accessories.

[0038] In some embodiments, the driving device includes a driving motor 33 and a reducer 34 installed at the bottom of the driving platform 6, and the driving motor 33 is connected to a relative set of driving rollers 7 through a transmission chain 35, so that a set of driving rollers 7 can drive the wheels 4 to rotate.

[0039] In some embodiments, the measuring device includes a force measuring lever 36 and a force measuring sensor 37 installed on the right side of the bottom inner side of the driving platform 6. One end of the force measuring lever 36 is connected to the housing of the reducer 34, and the other end is connected to the force measuring sensor 37. The force measuring sensor 37 converts the rotational force of the force measuring lever 36 into an electrical signal of the braking force and sends it to the controller.

[0040] In some embodiments, a central controller 38 is installed on the display stand 1 , and the central controller 38 is used to control various sensors and components.

[0041] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A new energy vehicle braking system training platform, comprising a display platform (1) and a front suspension (2) fixed to the front end of the display platform (1), wherein both ends of the front suspension (2) are rotatably connected to a set of wheel discs (3), and tires (4) are respectively fixed to the set of wheel discs (3), characterized in that: The display stand (1) is provided with a driving mechanism; The driving mechanism comprises a group of grooves (5), a group of driving platforms (6) and two groups of driving rollers (7), wherein the group of grooves (5) is opened on both sides of the front end of the display platform (1), the group of driving platforms (6) is installed in the group of grooves (5), the two groups of driving rollers (7) are movably installed on the top of the group of driving platforms (6) and are used to drive a group of tires (4) to rotate, and a driving device for driving the driving rollers (7) to rotate and a measuring device for measuring the braking value are respectively installed on the bottom of the group of driving platforms (6); A brake system is connected to the front end of the set of wheel discs (3), and the brake system is used to brake the set of wheel discs (3); A laser radar sensor (8) is installed on the display stand (1), and an obstacle simulation mechanism is provided at the rear end of the display stand (1) for simulating active braking.

2. A new energy vehicle braking system training platform according to claim 1, characterized in that: The braking system includes a pedal (9), a vacuum booster (10), a brake master cylinder (11), an ABS controller (12), a set of brake slave cylinders (13) and a set of drum brakes (14); The pedal (9) is mounted on the front end of the display stand (1); The vacuum booster (10) is arranged between the brake push rod of the pedal (9) and the brake master cylinder (11), and the vacuum booster (10) is connected to an electric vacuum motor (15); The brake master cylinder (11) is connected to the brake push rod of the pedal (9) through transmission, and hydraulic oil is provided in the brake master cylinder (11); The ABS controller (12) is connected to the brake master cylinder (11) via a brake line (16) and is used to adjust the brake pressure to prevent the wheel disc (3) from locking; A set of brake cylinders (13) are connected to the brake master cylinder (11) through hydraulic pipes (17) and are used to transmit the hydraulic pressure of the brake master cylinder (11) to a set of drum brakes (14); A set of pressure gauges (18) are respectively connected to the outside of a set of brake cylinders (13), and the set of pressure gauges (18) are used to display the hydraulic pressure changes of the brake cylinders (13).

3. A new energy vehicle braking system training platform according to claim 2, characterized in that: A wheel speed sensor (19) is respectively installed on a group of wheel discs (3). When the wheel speed sensor (19) detects that a group of wheel discs (3) are locked, the ABS controller (12) is started and the normally closed output solenoid valve is opened, so that the brake pressure on the wheel discs (3) is rapidly reduced due to the presence of a pipeline directly connected to the brake fluid storage tank, which is used to simulate wheel anti-lock braking.

4. A new energy vehicle braking system training platform according to claim 1, characterized in that: The obstacle simulation mechanism includes a stepper motor (20), a rotating screw rod (21), a sliding nut (22), a sliding plate (23), a stepper motor (24), a rotating round rod (25), a sliding sleeve (26), a groove (27), a rotating screw rod (28), a sliding nut (29) and a bearing seat (30), wherein the stepper motor (20) is mounted on the right side of the rear end of the display stand (1), the rotating screw rod (21) is mounted on the rotating end of the stepper motor (20), the sliding nut (22) is threadedly mounted on the rotating screw rod (21), and the sliding plate (23) is mounted on the upper end of the sliding nut (22). The stepper motor 2 (24) is mounted on the left side of the rear end of the display stand (1), the rotating rod (25) is mounted on the rotating end of the stepper motor 2 (24), the sliding sleeve (26) is movably inserted into the left end of the sliding plate (23), and is movably sleeved on the rotating rod (25), the groove (27) is opened on the sliding plate (23), the rotating screw rod 2 (28) is movably mounted in the groove (27), the sliding nut 2 (29) is threadedly sleeved on the rotating screw rod 2 (28), the supporting seat (30) is slidably mounted in the groove (27), and is sleeved on the outside of the sliding nut 2 (29), and the obstacle is used to be fixed on the supporting seat (30).

5. A new energy vehicle braking system training platform according to claim 4, characterized in that: The sliding sleeve (26) and the second rotating screw rod (28) are connected to each other through a set of helical gears (31).

6. The new energy vehicle braking system training platform according to claim 1, characterized in that: A lifting platform (32) is respectively installed on the bottom of each of the grooves (5), and the driving platform (6) is fixed on the lifting platform (32).

7. The new energy vehicle braking system training platform according to claim 1, characterized in that: The driving device comprises a driving motor (33) and a reducer (34) installed at the bottom of the driving platform (6), and the driving motor (33) is connected to a relative set of driving rollers (7) through a transmission chain (35).

8. The new energy vehicle braking system training platform according to claim 1, characterized in that: The measuring device includes a force measuring lever (36) and a force measuring sensor (37) installed on the right side of the bottom of the driving platform (6), one end of the force measuring lever (36) is connected to the housing of the reducer (34), and the other end is connected to the force measuring sensor (37).

9. The new energy vehicle braking system training platform according to claim 1, characterized in that: A central controller (38) is installed on the display stand (1).

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